The Pentax SMCP-DA* 16-50mm f/2.8 ED AL (IF) SDM Lens is a high-quality bright f/2.8 lens designed exclusively for use with digital SLR cameras. This lens brings together advanced optical technologies, including aspherical elements, special optical-glass elements, and original lens coatings. It offers a versatile ultra-wide to medium-telephoto zoom range, and can be used as the ideal standard zoom lens in a wide variety of applications, including landscape, snapshot and portrait. Pentax DA* (DA-Star) zoom lenses come equipped with the SDM System, which assures smoother, quieter auto-focusing operation by using a built-in supersonic motor. When mounted on the K10D digital SLR camera body, the focus mode is automatically switched to SDM-assisted auto-focusing. When mounted on older Pentax digital SLR camera bodies, the conventional autofocus mode using a camera-mounted motor is selected. FEATURES Ultra-Wide to Medium-Telephoto Equivalent focal length of 24mm-76mm in 35mm format, when used with digital SLR cameras. High Optical Performance Two ED elements and 3 aspherical elements compensate for chromatic and spherical aberration. Exclusive Digital Design The image circle of the lens has been created to match the smaller image recording area of digital SLR cameras. This ensures precise optical performance ideally suited to the camera's digital imaging characteristics. SP Coating SP (Super Protective) coating made of a special fluoride compound has been applied to the front surface of the new lens through the use of a unique evaporation process. As a result, the lens offers excellent water- and oil-repellant performance and makes for easier cleaning should the lens be accidentally smeared with fingerprints or cosmetics.
Designed for exclusive use with Pentax digital SLR cameras, the Pentax DA* 16-50mm f/2.8 wide-angle zoom lens is a terrific choice for landscapes, portraiture, and just about any other application. The lens features a tightly sealed, weather-resistant and dust-resistant construction to enhance durability in rainy or dusty conditions. The lens's three aspherical elements and two special optical glass elements, meanwhile, help compensate for chromatic and spherical aberration, producing images with superior contrast, clarity, and edge-to-edge sharpness. And thanks to the lens's Pentax-original Quick-Shift Focus System, you can easily and instantly switch from autofocus to manual focus.
- Focal length: 16-50mm
- Maximum aperture: f/2.8
- Minimum aperture: f/22
- Lens construction: 15 elements in 12 groups
- Angle of view: 83 to 31.5 degrees (when used with Pentax digital SLR camera body)
- Number of diaphragm blades: 9
- Metering system: TTL open-aperture metering
- Minimum focusing distance: 0.3 meters
- Maximum magnification: 0.21x
- Filter size: 77mm
- Corresponding AF mounts: Pentax KAF2
- Dimensions: 3.3 inches in diameter and 3.9 inches long
- Weight: 19.9 ounces (without hood)
- Warranty: 1 year